171.81.57.64/26
PublicClass B — /26 prefix — 62 usable hosts
Network address — the base address of the block (171.81.57.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 171.81.57.127 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 171.81.57.64/26 |
| Network Address | 171.81.57.64 |
| Broadcast Address | 171.81.57.127 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class B |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 171.81.57.65 |
| Last Usable IP | 171.81.57.126 |
| Network (Hex) | 0xAB513940 |
| Broadcast (Hex) | 0xAB51397F |
| Address Type | Public / Globally Routable |
Binary Representation
The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.
Split into Equal Subnets
Split 171.81.57.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.81.57.64/27 | 171.81.57.64 | 171.81.57.65 | 171.81.57.94 | 171.81.57.95 | 30 |
| 2 | 171.81.57.96/27 | 171.81.57.96 | 171.81.57.97 | 171.81.57.126 | 171.81.57.127 | 30 |
Split 171.81.57.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.81.57.64/28 | 171.81.57.64 | 171.81.57.65 | 171.81.57.78 | 171.81.57.79 | 14 |
| 2 | 171.81.57.80/28 | 171.81.57.80 | 171.81.57.81 | 171.81.57.94 | 171.81.57.95 | 14 |
| 3 | 171.81.57.96/28 | 171.81.57.96 | 171.81.57.97 | 171.81.57.110 | 171.81.57.111 | 14 |
| 4 | 171.81.57.112/28 | 171.81.57.112 | 171.81.57.113 | 171.81.57.126 | 171.81.57.127 | 14 |
Split 171.81.57.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.81.57.64/29 | 171.81.57.64 | 171.81.57.65 | 171.81.57.70 | 171.81.57.71 | 6 |
| 2 | 171.81.57.72/29 | 171.81.57.72 | 171.81.57.73 | 171.81.57.78 | 171.81.57.79 | 6 |
| 3 | 171.81.57.80/29 | 171.81.57.80 | 171.81.57.81 | 171.81.57.86 | 171.81.57.87 | 6 |
| 4 | 171.81.57.88/29 | 171.81.57.88 | 171.81.57.89 | 171.81.57.94 | 171.81.57.95 | 6 |
| 5 | 171.81.57.96/29 | 171.81.57.96 | 171.81.57.97 | 171.81.57.102 | 171.81.57.103 | 6 |
| 6 | 171.81.57.104/29 | 171.81.57.104 | 171.81.57.105 | 171.81.57.110 | 171.81.57.111 | 6 |
| 7 | 171.81.57.112/29 | 171.81.57.112 | 171.81.57.113 | 171.81.57.118 | 171.81.57.119 | 6 |
| 8 | 171.81.57.120/29 | 171.81.57.120 | 171.81.57.121 | 171.81.57.126 | 171.81.57.127 | 6 |
Split 171.81.57.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.81.57.64/30 | 171.81.57.64 | 171.81.57.65 | 171.81.57.66 | 171.81.57.67 | 2 |
| 2 | 171.81.57.68/30 | 171.81.57.68 | 171.81.57.69 | 171.81.57.70 | 171.81.57.71 | 2 |
| 3 | 171.81.57.72/30 | 171.81.57.72 | 171.81.57.73 | 171.81.57.74 | 171.81.57.75 | 2 |
| 4 | 171.81.57.76/30 | 171.81.57.76 | 171.81.57.77 | 171.81.57.78 | 171.81.57.79 | 2 |
| 5 | 171.81.57.80/30 | 171.81.57.80 | 171.81.57.81 | 171.81.57.82 | 171.81.57.83 | 2 |
| 6 | 171.81.57.84/30 | 171.81.57.84 | 171.81.57.85 | 171.81.57.86 | 171.81.57.87 | 2 |
| 7 | 171.81.57.88/30 | 171.81.57.88 | 171.81.57.89 | 171.81.57.90 | 171.81.57.91 | 2 |
| 8 | 171.81.57.92/30 | 171.81.57.92 | 171.81.57.93 | 171.81.57.94 | 171.81.57.95 | 2 |
| 9 | 171.81.57.96/30 | 171.81.57.96 | 171.81.57.97 | 171.81.57.98 | 171.81.57.99 | 2 |
| 10 | 171.81.57.100/30 | 171.81.57.100 | 171.81.57.101 | 171.81.57.102 | 171.81.57.103 | 2 |
| 11 | 171.81.57.104/30 | 171.81.57.104 | 171.81.57.105 | 171.81.57.106 | 171.81.57.107 | 2 |
| 12 | 171.81.57.108/30 | 171.81.57.108 | 171.81.57.109 | 171.81.57.110 | 171.81.57.111 | 2 |
| 13 | 171.81.57.112/30 | 171.81.57.112 | 171.81.57.113 | 171.81.57.114 | 171.81.57.115 | 2 |
| 14 | 171.81.57.116/30 | 171.81.57.116 | 171.81.57.117 | 171.81.57.118 | 171.81.57.119 | 2 |
| 15 | 171.81.57.120/30 | 171.81.57.120 | 171.81.57.121 | 171.81.57.122 | 171.81.57.123 | 2 |
| 16 | 171.81.57.124/30 | 171.81.57.124 | 171.81.57.125 | 171.81.57.126 | 171.81.57.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.